Ecozone.e00 (Holdridge Life Zones) is an ARC/INFO interchange file. The
file can only be used with Geographic Information System (GIS) software,
such as ARC/INFO, the file's native format, or by importing it into
another GIS software package.

Ecozone.e00 was created by aggregating the 37 different Holdridge Life
Zones into 10 categories: water, polar, sub-polar, boreal, cool
temperate, warm temperate, subtropical dry, subtropical wet, tropical
dry, and tropical wet. The source of the original data is: Leemans, Rik,
1990. "Global data sets collected and compiled by the Biosphere
Project," Working Paper, IIASA-Laxenburg, Austria. The original data can
be freely downloaded at: http://grid2.cr.usgs.gov
<http://grid2.cr.usgs.gov/>. The online documentation at this website
lists 38 ecozones, but there are only 37 in the downloadable GIS file.

This GIS data was created as part of The Center for International
Development?s ongoing research into the role of geography in economic
development (see www.cid.harvard.edu/economic.htm)
<http://www.cid.harvard.edu/cidglobal/economic.htm>. It was created
between 1998 and 1999. Please reference CID if you use this data in a
publication.

